exponential extrapolation

It should be pointed out that the discrete method in time domain is identical between the precise computation of the matrix exponential and the extrapolation, so that the combination of them would not increase the computation time.

需要指出的是，由于考虑了矩阵指数精细算法和外推法算法在时间离散方法上的一致性，在外推过程中，计算工作量基本没有增加；

It is confirmed that exponential function extrapolation contributes much to the improvement of inverted temperature; however it does much less for pressure inversion.

发现指数函数外推法引入数据处理后大大改进了大气温度的归算结果，而对气压归算的影响却很小。

One is differential least square method based on conic, and the other method is trend extrapolation based on modified exponential model.

本文采用两种方法来解决高温温区的外推标定问题，即基于二次曲线的导数最小二乘法和基于修正指数模型的趋势外推法。